Reamer



No. 752,724. PATENTED FEB. 23, 1904.

' I. E. S. TAYLOR.

RBAMER.

APPLICATION FILED JAN. 5. 1903.

no MODEL.

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UNITED STATES Patented February 23, 1904.

PATENT OFFICE.

JOHN E. SUMMERS TAYLOR, OF DETROIT, MICHIGAN, ASSIGNOR TO TAYLOR MANUFACTURING COMPANY, LIMITED, OF DETROIT,

REAMER.

SPECIFICATION forming part of Letters Patent No. 752,724, dated February 23, 1904.

Application filed January 5, 1908. Serial No. 137,783. (No model.)

To all whom it may concern.-

Be it known that I, JOHN E. SUMMERS TAY- LOR, a citizen of the United States, residing at Detroit, in the county of Wayne and State of Michigan, have g invented a newand useful Reamer, of which the following is a specification.

The invention h erein set forth is for the purpose of undercutting to provide sockets or openings that taper outwardly, and is particularly intended for forming sockets in the under sides of marble slabs and similar stones to permit the application of basin-clamps and other devices, though, of course, useful for various analogous purposes.

The object is to provide a reamer of this character which may be placed in an ordinary drilled opening and when rotated and having pressure applied thereto will automatically expand and undercut to provide atapering socket. The device is, furthermore, constructed so that it may be withdrawn without interference.

The tool may be employed in connection with an ordinary bit-stock, and, furthermore, is very simple, the parts being so constructed and related that there is small .chance of derangement.

The preferred form of construction is illustrated in the accompanying drawings, where- 1n Figure l is a side elevation of the reamer with the stem in projected position. Fig. 2 is also a side elevation showing the stem moved inwardly. Fig.' 3 is a longitudinal sectional view through Fig. 2. Fig. 4 is a cross-sectional View, on an enlarged scale, taken on the line a; w of Fig. 1. Fig. 5 is a cross-sectional view taken on the line y y of Fig. 1.

. ends in the seats 16, the upper ends of these cutters being provided with enlargements 20, which project beyond the seats and have their upper ends in engagement with the inclined annular face 14 of the flared portion of the head. The lower ends 21 of the cutters are beveled and are suitably sharpened. The pivots 22, which hold the cutters in place, are preferably screw-threaded, so that they may be readily removed to release said cutters.

In constructing a tapering socket of the character described an opening is first made with an ordinary drill. The reamer is then secured to a bit-stock by means of the shank 11, the head is elevated, or, in other words, the stem is projected from the socket, and the lower ends of the cutters are housed in the seats, as shown in Fig. 1. Theprojected end of the stem is then placed in the opening made and pressure is brought to bear upon the bit-stock, which is then rotated. This pressure causes the head to be pressed downwardly, and the inner ends of the cutters riding upon the inclined face 14 will be forced inwardly. This will cause the outer ends of the cutters to swing outwardly and into engagement with the walls of the opening. As these walls are cut away the cutters will be projected more and more until the desired taper has been obtained, as will be readily understood. The tool may be readily withdrawn by simply drawing outwardly,where upon the head will be moved rearwardly. The cutters will consequently be released and may again assume the position shown in Fig. 1, so that the end of the tool can pass through the contracted outer end of the socket.

It will be apparent'that this device is of great utility and is thoroughly practicable, being automatic in its feed or expansion while at 'work. The parts are simple and may be readily manufactured, while at the same time they are simple, so that there is little chance of their becoming deranged. Sockets of different sizes may be made by providing different sizes of cutters, the cutters being interchangeable, as the pivots are readily removable. Furthermore, by having the cutters pivoted directly upon the stem and movable into and out of seats formed therein the reamer may be inserted in openings of substantially the same diameter as the stem, and

said stem will thus be properly guided and held during its rotation to avoid wabbling or other lateral movement.

From the foregoing it is thought that the construction, operation, and many advantages of the herein-described invention will be apparent to those skilled in the art without'further description, and it will be understood that various changes in the size, shape, proportion, and minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is- I 1. In a reamer, the combination with a head having a socket, of a stern carried by the head and longitudinally slidable in the socket, and a cutter pivoted to the stem and slidable therewith, said cutter having a portion that engages the head when the stem is moved into the socket to throw the operative portion of said cutter outwardly.

2. In a reamer, the combination with a head having a socket, of a stem carried by and longitudinally movable in the socket, and a cutter pivoted between its ends to the stem and being slidable therewith, the inner end of the cutter engaging in the socket and against the head and swinging the outer operative end of said cutter outwardly upon the movement of the stem into the socket.

3. In a reamer, the combination with a head having a tool-holder-engaging shank at one end and a socket in its other end, the outer end of saidsocket havingan outwardly-inclined wall, of a stem carried by the head and longitudinally slidable in the socket, said stem having one end exposed, and a cutter pivoted to the exposed end of the stem and slidable therewith, the inner end of the cutter having a slidable engagement with the inclined wall of the head and swinging the outer end of said cutter outwardly upon the movement of the steminto the socket.

4. In a reamer, the combination with a head having an angular tool-holder-engaging shank at one end and a longitud inally-disposed socket extending in from the other end, the outer end of said socket being flared, of a stem carried by the head and freely slidable in the socket, said stem having one end exposed and provided with a plurality of longitudinally-disposed seats, means connecting the stem and head to prevent their disassociation and perinit their relative movement, and cutters pivoted between their ends in the seats of the stem, the inner ends of said cutters projectingfrom the seats and bearing against the inner face of the flared wall, the outer ends constituting cutting portions.

In testimony that I claim the foregoing as my own I have hereto afiixed my signature in the presence of two witnesses.

JOHN E. SUMMERS TAYLOR.

Witnesses:

D. CARMIOHAEL, J r., DAISY L. TAYLOR. 

